G01D 5/3473
Circular or rotary encoders
Official title: {Circular or rotary encoders}
G01D5/3473 (Circular or rotary encoders) appears on 832 US grants and 854 published applications in this corpus.
Search patents in G01D- Granted patents
- 832
- Published applications
- 854
- Assignees
- 421
- Inventors
- 1,559
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 14 | 4 |
| 2002 | 19 | 20 |
| 2003 | 21 | 19 |
| 2004 | 16 | 20 |
| 2005 | 17 | 33 |
| 2006 | 18 | 30 |
| 2007 | 23 | 22 |
| 2008 | 26 | 34 |
| 2009 | 19 | 25 |
| 2010 | 18 | 27 |
| 2011 | 20 | 35 |
| 2012 | 17 | 28 |
| 2013 | 26 | 36 |
| 2014 | 32 | 39 |
| 2015 | 34 | 61 |
| 2016 | 48 | 44 |
| 2017 | 50 | 48 |
| 2018 | 33 | 45 |
| 2019 | 50 | 35 |
| 2020 | 31 | 45 |
| 2021 | 30 | 36 |
| 2022 | 44 | 26 |
| 2023 | 28 | 43 |
| 2024 | 36 | 40 |
| 2025 | 29 | 34 |
| 2026 | 18 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reflection-type optical encoder scale including an inorganic layer stack pattern with specific reflectance6 Oct 2026US 12,754,044 B2Dai Nippon Printing Co.Ltd.
- Rotational speed estimation method for incremental encoder29 Sep 2026US 12,748,125 B2Artery Technology Co., Ltd.
- Encoder, servo motor, and servo system25 Aug 2026US 12,716,755 B2Kabushiki Kaisha Yaskawa Denki
- Rotating display apparatus21 Jul 2026US 12,687,412 B2LG Electronics Inc.
- Optical module for encoder and reflection-type encoder21 Jul 2026US 12,687,413 B2Hamamatsu Photonics K.K.
- Printing apparatus, control method, and storage medium8 Oct 2026US 2026/0307406 A1Canon Kabushiki Kaisha
- Optical module for encoder and reflection-type encoder8 Oct 2026US 2026/0309518 A1Hamamatsu Photonics K.K.
- Rotary optical encoder devices for optical flow sensing, and related sensors and methods1 Oct 2026US 2026/0298677 A1Precision Planting LLC
- Conveyance apparatus1 Oct 2026US 2026/0299489 A1Canon Kabushiki Kaisha
- Optical encoder capable of supporting large off-axis mounting, remote installation, and high installation flexibility24 Sep 2026US 2026/0287402 A1Pixart Imaging Inc.
Most cited
By later US patents
- Insulin infusion pump626US 4,498,843 A1985
- Pulser with double-bearing position encoder for non-invasive physiological monitoring607US 9,891,079 B2Masimo Corporation · 2018
- Z-encoder mechanism177US 5,912,661 AMicrosoft Corporation · 1999
- Optical encoders using non-patterned targets129US 6,246,050 B1Hewlett-Packard Company · 2001
- Encoder mounting device120US 5,407,294 ADaido Corporation · 1995